code: def __init__(self):
      self.data = read_csv("data/taxi.csv")
      self.cmap = colorbrewer(self.data["taxi_id"], alpha=220)
      self.t = self.data["timestamp"].min()
      self.painter = BatchPainter()
  
file_path: geoplotlib/examples/taxi.py
imports: from geoplotlib.layers import BaseLayer
  from geoplotlib.core import BatchPainter
  import geoplotlib
  from geoplotlib.colors import colorbrewer
  from geoplotlib.utils import epoch_to_str, BoundingBox, read_csv
label_desc: Use image node_id 1 to create a new TrailsLayer object from inherited base classes: BaseLayer with example: obj = TrailsLayer()